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| author | Amit Kapila <akapila@postgresql.org> | 2018-09-14 10:17:31 +0530 |
|---|---|---|
| committer | Amit Kapila <akapila@postgresql.org> | 2018-09-14 10:17:31 +0530 |
| commit | 568b4e1fdeb37361b1f5c5b1e1d5a1b998f7a9e9 (patch) | |
| tree | a219e3c1de75dfc0db0258302d37738161fbaa48 /src/backend/executor/nodeSubplan.c | |
| parent | 271b678436ce83bdd6bb355f9fcc011dafdd0122 (diff) | |
Don't allow LIMIT/OFFSET clause within sub-selects to be pushed to workers.
Allowing sub-select containing LIMIT/OFFSET in workers can lead to
inconsistent results at the top-level as there is no guarantee that the
row order will be fully deterministic. The fix is to prohibit pushing
LIMIT/OFFSET within sub-selects to workers.
Reported-by: Andrew Fletcher
Bug: 15324
Author: Amit Kapila
Reviewed-by: Dilip Kumar
Backpatch-through: 9.6
Discussion: https://postgr.es/m/153417684333.10284.11356259990921828616@wrigleys.postgresql.org
Diffstat (limited to 'src/backend/executor/nodeSubplan.c')
0 files changed, 0 insertions, 0 deletions